package cn.tedu.v4;

import java.io.*;
import java.net.ConnectException;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;
/*
Client  客户端--改成Server端模式  【优化】
 */

public class Client {

    private Socket socket;
    private String ip;
    private  static final String HOST="127.0.0.1";
    private  static final Integer PORT=4545;
    private PrintWriter pw;
    private BufferedReader br;
    public Client() {
        try {
            socket = new Socket(HOST,PORT);
            br=new BufferedReader(new InputStreamReader(socket.getInputStream(),"UTF8"));

            pw=new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF8")), true);
        }catch (NullPointerException e){
            System.out.println("友情提示：IP传入错误导致链接失败");
        }
        catch (UnknownHostException e) {
            System.out.println("友情提示：IP可能传入错误");
        }catch (ConnectException e){
            System.out.println("客户端链接失败：建议检查IP或者端口号");
        } catch (IOException e) {
            System.out.println("客户端链接服务器失败，提示：检查IP/端口");
        }
    }

    public void start() {


//        BufferedReader br=null;//置空：赋值，关流
        try {


            new Thread(()->{
                try {

                    String message;

                    while ((message = br.readLine()) != null) {
                        System.out.println("服务器端说："+message);
                    }
                    }catch (IOException e){
                    System.out.println("服务器端读入失败");
                }

            }).start();

         System.out.println(ip+"对服务器端说话：");
            Scanner input = new Scanner(System.in);
            while (true) {
                System.out.println("客户端请输入：");
                String say=input.nextLine();
                pw.println("客户端说:"+say);
            }
        }  finally {
            try {
                br.close();
            }catch (IOException e){
                System.out.println("客户端关闭失败~");
            }
            if (pw != null)
                pw.close();
        }
        }





    public static void main(String[] args)  {

        Client client = new Client();
        client.start();
    }
}
